// Jubatus: Online machine learning framework for distributed environment
// Copyright (C) 2011 Preferred Infrastructure and Nippon Telegraph and Telephone Corporation.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

#pragma once

namespace pfi {
namespace text {
namespace json {
class json;
}
}
}

namespace jubatus {
namespace fv_converter{

struct datum;

class json_converter {

public:
  static const char* NULL_STRING;

  static void convert(const pfi::text::json::json& jason, datum& ret_datum);

  static void re_convert(const datum& datum, pfi::text::json::json& ret_jason);

};

}
}
